The Shared cM Project tool is a popular interactive tool that allows you to enter an amount of shared DNA and explore relationship possibilities. In this short post I explain how to access more detail in the shared cM histograms.
Category: Tools
Last night I released an update with several enhancements to the DNA Coverage tool that I’ll list in this short post.
The coverage estimator is a new tool at DNA Painter that lets you build a tree or import a GEDCOM and then mark the people in that tree who have tested. It then estimates the DNA coverage for the root person based on the testers. In this post I explain how to use it.
Earlier in July 2022, AncestryDNA launched a new feature: Chromosome Painter. In this post I’ll introduce a new tool that allows you to extract segment data that you can use to paint population information in your DNA Painter chromosome map.
The Library of Matches is a new tool by Cody Ely with example shared segments for different known matches. This visualization of segments could help you distinguish between different relationship possibilities.
Bucketing is a new DNA Painter tool that can help you subdivide your segments based on match or segment lists of other relatives.
I’m pleased to release a new tool today called the Shared cM Investigator. Intended for those who have siblings tested, but not the parents of those siblings, the tool uses segments and a simple mathematical equation to estimate how much DNA the parent of those siblings might have shared with the match.
Categories
Distinct segment generator
As announced last month in the newsletter, the new distinct segment generator tool allows you to amalgamate a set of segments that more than one family member shares with a specific match. The tool will then output just the distinct segments, with the centimorgans (cMs) recalculated.
Launched in late 2020, the inferred segments generator helps users calculate the segments they can infer from the DNA their close relatives share with others. This can be a confusing concept. I recently added a small additional feature to the tool that can help you infer segments from a grandparent.
There’s a new feature in the Shared cM Project tool. You can now view the list of potential relationships for a specific number of cM shared in a tree format. Here are some notes on how this new feature works.